Step 1: Perform multiplication. 1 + 1 + 9 − 10 × 4 + 7 + 18 − 20 × 7 1 + 1 + 9 − 40 + 7 + 18 − 140 Step 2: Perform addition and subtraction from left to right. 2 + 9 − 40 + 7 + 18 − 140 11 − 40 + 7 + 18 − 140 −29 + 7 + 18 − 140 −22 + 18 − 140 −4 − 140 −144 The final answer is −144.

1+1+9-104+7+18-207

April 5, 2026Mathematics

ScanSolve AI Answer

Answer

-144

Step-by-step solution

2 steps

Perform multiplication.
$1 + 1 + 9 - 10 \times 4 + 7 + 18 - 20 \times 7$ $1 + 1 + 9 - 40 + 7 + 18 - 140$
Perform addition and subtraction from left to right.
$2 + 9 - 40 + 7 + 18 - 140$ $11 - 40 + 7 + 18 - 140$ $-29 + 7 + 18 - 140$ $-22 + 18 - 140$ $-4 - 140$ $-144$

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