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Compound Assignment With Augmented Subtraction

curriculum/challenges/english/blocks/basic-javascript/56533eb9ac21ba0edf2244b0.md

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--description--

Like the += operator, -= subtracts a number from a variable.

js
myVar = myVar - 5;

will subtract 5 from myVar. This can be rewritten as:

js
myVar -= 5;

--instructions--

Convert the assignments for a, b, and c to use the -= operator.

--hints--

a should equal 5.

js
assert(a === 5);

b should equal -6.

js
assert(b === -6);

c should equal 2.

js
assert(c === 2);

You should use the -= operator for each variable.

js
assert(__helpers.removeJSComments(code).match(/-=/g).length === 3);

You should not modify the code above the specified comment.

js
assert(
  /let a = 11;/.test(__helpers.removeJSComments(code)) && /let b = 9;/.test(__helpers.removeJSComments(code)) && /let c = 3;/.test(__helpers.removeJSComments(code))
);

--seed--

--seed-contents--

js
let a = 11;
let b = 9;
let c = 3;

// Only change code below this line
a = a - 6;
b = b - 15;
c = c - 1;

--solutions--

js
let a = 11;
let b = 9;
let c = 3;

a -= 6;
b -= 15;
c -= 1;